1. It is especially powerful for calibrating quarte-wave-plate and half-wave-plate, the metrical precision is less than 0.1%.
   对于1/4波片和半波片的测量精度优于0.1%。
2. The paper expounds in detail the relation between oil density and metering and suggests that it is necessary to propagand metrical knowledge to customers.
   详细阐述了油品储存收发过程中密度与计量的关系,并提出了向客户宣传计量知识的必要性。
3. The use of the word is analogous to its use in verse, with its traditional metrical units of iambus, trochee, dactyl and so on.
   节拍在此处的用途与其在诗文中长音节的抑扬短长等作用相似。

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